我正在尝试创建一个备份类，其主要目标是自定义类调用，以根据用户选择仅对特定扩展名、特定文件大小或主目录中的特定目录过滤最终备份。
目前，该课程缺少压缩算法，因为我一直在寻找有关 .zip 压缩的解决方案。
下面是一个文件和文件夹结构示例，该类将使用它来创建压缩存档（zip、rar、gz 等）：
Array
(
[0] => pclzip.lib.php
[1] => index.php
[style] => Array
(
[js] => Array
(
[0] => jNice.js
[1] => jquery.js
)
[img] => Array
(
[0] => input-shaddow-hover.gif
[1] => btn_right.gif
[2] => top-menu-bg.gif
[3] => top-menu-item-bg.gif
[4] => left-menu-bg.gif
[5] => button-submit.gif
[6] => btn_left.gif
[7] => select_right.gif
[8] => select_left.gif
[9] => transdmin-light.png
[10] => content.gif
[11] => input-shaddow.gif
)
[css] => Array
(
[0] => transdmin.css
[1] => layout.css
[2] => ie7.css
[3] => hack.css
[4] => jNice.css
[5] => ie6.css
[6] => reset.css
)
)
[2] => config.php
[3] => delete.php
[4] => restore.php
[5] => cron.php
[6] => manage.php
)
如您所见，文件和文件夹结构需要保存在备份文件中，因此要备份的文件和文件夹列表已经结构化，如果数组叶子包含子数组，则叶子是一个目录，如果叶子不包含子数组，则叶子是文件。
以下是我创建递归压缩文件和文件夹的过程的目的，这些文件和文件夹（应该）适用于我之前介绍的结构化数组：
private function zipFileAndFolderStructureArray ( $backupContentsArray, $zipDestination, $backupRootDirectory ) {
if ( $this -> zipObject == null ) {
if ( extension_loaded ( 'zip' ) === true ) {
$this -> zipObject = new ZipArchive();
if ( ( $zipErrorCode = $this -> zipObject -> open ( $zipDestination, ZipArchive::CREATE ) ) !== true ) $this -> zipObject = null;
else $this -> zipFileAndFolderStructureArray ( $backupContentsArray, $zipDestination, $backupRootDirectory );
}
}
else if ( $this -> zipObject != null ) {
foreach ( $backupContentsArray as $folder => $file_or_folder_list ) {
$cwd = rtrim ( $backupRootDirectory, '/' ) . '/' . $folder . '/';
if ( is_array ( $file_or_folder_list ) && is_dir ( $cwd . $folder ) ) {
echo 'adding folder ' . $folder . ' in cwd ' . $cwd . '<br>';
$this -> zipObject -> addEmptyDir ( $folder );
$this -> zipFileAndFolderStructureArray ( $file_or_folder_list, $zipDestination, $cwd );
}
else if ( is_file ( $cwd . $file_or_folder_list ) ) {
echo 'adding file ' . $file_or_folder_list . '<br>';
$this -> zipObject -> addFromString ( $cwd . $file_or_folder_list );
}
}
$this -> zipObject -> close ();
return true;
}
}
问题是，我被困在了这一点上。此递归函数在输入第一个文件夹叶子后存在，创建一个其中只有一个空文件夹的存档。
你能帮我找出问题所在吗？
关于我可以用来将压缩功能扩展到 RAR 和 GZ 的可能类的提示，尽可能多地重用用于 ZIP 的相同压缩算法？
先感谢您
PS 添加了当前创建文件夹和目录结构的函数
public function directory_list ( $directory_base_path, $filter_dir = false, $filter_files = false, $exclude_empty_dirs = true, $include_extensions = null, $exclude_extensions = null, $exclude_files = null, $recursive = true ) {
$directory_base_path = rtrim ($directory_base_path, "/" ) . "/";
if ( ! is_dir ( $directory_base_path ) ) return false;
$result_list = array();
if ( ! is_array ( $exclude_files ) ) $exclude_array = Array ( '.', '..' );
else $exclude_array = array_merge ( Array ( '.', '..' ), $exclude_files );
if ( ! $folder_handle = opendir ( $directory_base_path ) ) return false;
else{
while ( false !== ( $filename = readdir ( $folder_handle ) ) ) {
if ( ! in_array ( $filename, $exclude_array ) ) {
if ( is_dir ( $directory_base_path . $filename . "/" ) ) {
if ( $recursive && strcmp ( $filename, "." ) != 0 && strcmp ( $filename, ".." ) != 0 ) { // prevent infinite recursion
$result = self::directory_list("$directory_base_path$filename/", $filter_dir, $filter_files, $exclude_empty_dirs, $include_extensions, $exclude_extensions, $exclude_files, $recursive);
if ( $exclude_empty_dirs ) {
if ( count ( array_keys ( $result ) ) > 0 ) $result_list[$filename] = $result;
}
else $result_list[$filename] = $result;
}
else if ( ! $filter_dir ) $result_list[] = $filename;
}
else if ( ! $filter_files ) {
$extension = end ( explode ( '.', $filename ) );
if ( ! is_array ( $include_extensions ) && count ( $include_extensions ) == 0 && ! is_array ( $exclude_extensions ) && count ( $exclude_extensions ) == 0 ) if ( $filename != '.' && $filename != '..' ) $result_list[] = $filename;
if ( is_array ( $exclude_extensions ) && count ( $exclude_extensions ) > 0 && ! in_array ( $extension, $exclude_extensions ) ) $result_list[] = $filename;
else if ( is_array ( $include_extensions ) && count ( $include_extensions ) > 0 && strlen ( $extension ) > 0 && in_array ( $extension, $include_extensions ) ) $result_list[] = $filename;
}
}
}
closedir($folder_handle);
return $result_list;
}
}